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Star SR-20J Type N

The SR-20JN sliding head lathe is ideal for small length-to-diameter ratio parts. Production costs for short-turned parts are further reduced through the lack of a revolving guide bush, therefore greatly reducing remnant lengths.

A total of up to 30 cutting tools are still available including 14 power-driven tools for cross drilling, milling, slotting and angular hole machining. The new 2 position deep drilling station allows drilled holes up to 10mm diameter by 100mm deep to be carried out on the main spindle.

The fully independent sub spindle has a full C axis and coupled with polar co-ordinates creates a virtual ‘Y’ axis thus enabling the machining of hexagon, square or other profiles.

Star SR-20J Type N

WORKPIECE

DIAMETER Diameter 20mm / 22.2mm (OPT)
LENGTH Length 55mm
GEOMETRY Geometry
C AXIS C Axis MAIN + SUB SPINDLE

Benefits

  • Full 20mm Bar capacity in both Main and Sub spindles
  • Six Turning Tools
  • 6 Front End working tools
  • 4 Independent Rear end working tools (8 static or 6 driven)
  • 5 Driven tools as standard (up to a maximum of 14)
  • 'C' Axis standard on Main spindle and Sub spindle
  • Maintenance free Linear Guideways
  • Fully independent Sub-spindle
  • 35 mpm Rapid Traverse
  • Independent deep hole drilling Spindles - Main spindle
  • Shorter Remnant Length

Specification

MAIN SPINDLE SIDE
Number of axes7
Main spindle (headstock)Z1 / C1 axis
Tool postX1 / Y1 axis
Max. machining diameter20 mm / 23 mm (option)
Max. headstock stroke (sliding head / fixed headstock lathe)205 mm / 50 mm
Max. drive power3.7 kW
Max. main spindle speed10,000 rpm
Main spindle tooling
Turning tool6 tools (□ 12 mm)
Drilling tools (4-spindle sleeve holder)4 tools (ER16)
Cross driven tools4 (5) tools
Speed8,000 rpm
KINEMATIC DIAGRAM
Star SR-20J Type N - Kinematic Diagram
SUB SPINDLE SIDE
Sub spindleX2 / Z2 / C2 axis
Max. chucking diameter20 mm / 23 mm (option)
Drive power1.1 kW
Max. sub spindle speed9,000 rpm
Sub spindle tooling
Drilling tools (4-station tool holder)4 tools (Ø 22 mm sleeve)
Drive unit (standard)4 tools (ER16)
Max. speed backworking8,000 rpm
FMBBAR FEED DIMENSION A (MM)
Micromag 08-203415 (1.6M)5015 (3.2M)6015 (4.2M)
Minimag 2-203415 (1.6M)5015 (3.2M)6015 (4.2M)
Turbo 2-203215 (2.2M)4215 (3.2M)5215 (4.2M)
Turbo 3-363320 (2.2M)4320 (3.2M)5320 (4.2M)
Star SB-20R Type G - Dimensions

More information

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